Conventional Seamless Casing Pipe OD 131 mm x ID 113mm x 6mm Drill Rods and Casing Tubes We manufacture a range of high quality tubular products from high tensile cold drawn and hot finished seamless steel tubes. Drill rods are available in DCDMA sizes AW, BW and NW and with tapered threaded tool joints in sizes BWY and NWY. Drill rods are also available in Wireline sizes N, H, P, S and Metric sizes 42mm and 50mm. We also manufacture Friction-welded Drill Rods for other